fix: stop acm stalling

Signed-off-by: Chris Butler <chris.butler@redhat.com>

Author: butler54

values-simple.yaml

@@ -20,7 +20,6 @@ clusterGroup:
     acm:
       name: advanced-cluster-management
       namespace: open-cluster-management
-      channel: release-2.13
     sandbox:
       name: sandboxed-containers-operator
       namespace: openshift-sandboxed-containers-operator